The Keystone Cops was a series of silent film comedies featuring a totally incompetent group of policemen who frequently were part of train robberies, train crashes (spectacular), cars that fell apart and motorcycle mayhem . They may have invented the car chase scene (as they were invented about the same time as movies and cheap cars)
These bumbling lawmen were often depicted crowded onto their jalopy to the point of overflowing into the street as they chased down the bad guys
A Hollywood movie prop special above, the 1924 special breakaway Model T
Above a 1921 Model T
Below is a movie prop Hupmobile
image via: http://thatcarguy.typepad.com
Above, the Little Rascals
Al Jolson and his custom 1928 Mercedes Spl
Buster Keaton and his 1928 Austin
WC Fields with a 1930 Bantam movie car, in the movie 300 Yard Drive
Rudy Valentino's (unbelievable biography: http://emol.org/emclub/?q=rudolphvalentino )cars above an Avoin Voisin, and below a 1925 Isotta Frashini. His 1923 Isotta can be seen in the Nethercutt Museum: http://www.pbase.com/gemc48/image/39217895
A 1910 Stanley Steamer and in the back is a 1940 Packard Darin
John Wayne and Maureen O'Hara in a 1914 Stutz Bearcat
a 1911 Ford and Jimmy Durante... what a pit crew! 
Frank is best known ( perhaps ) as the joker in the 60's tv show Batman
Built so it could still move under it's own power when it was 1/2 it's orginal width. I wish this had shown up when I searched the web, but nothing out there about it. Wouldn't it be the coolest to look over and see how they built it?!
A Hollywood movie prop special above, the 1924 special breakaway Model T
Above a 1921 Model T
The bottom two photos are of the diorama at the Petersen Museum in Los Angeles on Wilshire
